APA
Oxtoby E., . (1975). A guide to the anatomy of a common African earthworm. Nairobi: EALB.
Chicago
Oxtoby Edna, . 1975. A guide to the anatomy of a common African earthworm. Nairobi: EALB.
Harvard
Oxtoby E., . (1975). A guide to the anatomy of a common African earthworm. Nairobi: EALB.
MLA
Oxtoby Edna, . A guide to the anatomy of a common African earthworm. Nairobi: EALB. 1975.